China's Great Firewall
Millions of passwords stolen through maneuvers such as 'database sweeps' point to Internet security and legal lapses in China.
Panic rippled through China's web community in December on reports that hundreds of millions of secret passwords from China's most popular websites had fallen prey to hackers.
The censorship is not only about restricting access to foreign websites, but also monitoring internet traffic inside the country.
Google may have rolled out its cloud-storage Google Drive last week, but some 500 million internet users may never have a chance to try it out - those in China.
Having hit the country's so-called Great Firewall, Google Drive has joined a host of other services banned in the communist nation, such as YouTube, Google+, Twitter, Dropbox, Facebook and Foursquare.